The Focus Fusion Society Forums Focus Fusion Cafe voltage measuring device to go on power bus to fusion reactor. Reply To: would nuclear energy really be accessible to all?

#10293
Aquariumnerd
Participant

Aquariumnerd wrote: im working on home fusion project. I just had an idea, The output of the crockford Walton voltage multiplier I’m building will carry about twenty ma at minus twenty kv. I want to measure the voltage. so if i use a five volt zener diode, i should be able to direct five volts through a circuit right. The excess currant flows through the diode. I will run a voltage to frequency converter, with a series low value resistor on the power bus. Converting te voltage to frequency to output through a tiny led to be picked up by an external circuit to convert the frequency to a voltage reading. I’m aware that corona from the circuit could destroy it but surely if i insulate the circuit with silicon sealant, it would be fine 😕 The only thing might be a surge in current form capacitors.
The maximum heat dissipation of the diode will be only 0.1 watts, with five volts across it. So this sounds feasible :/

I just realized i cant measure voltage like this. but i could measure current like this. This is because i don’t know the resistance in series, e.g. from the chamber or voltage.